Pizza Box Solar Oven

I first noticed the pizza box solar oven about 2 weeks ago. But everyone that tried it could not get it to work right. I figured that the problem was that the inside had aluminum foil on it that was not painted black. And a slight thermal mass was needed inside. So, I started to search to see if someone had painted the inside black and got one to work. I found these videos on youtube in 4 parts.







Richard